Self-contained rotary device



March 25, 1952 F. SCOGNAMILLO 2,590,727

SELF-CONTAINED ROTARY DEVICE Filed Feb. 21, 1949 2 SHEETS-SHEET 1Elmo/Wm A'TTOlP/VE Y March 25, 1952 F. SCOGNAMILLO 2,590,727

SELF-CONTAINED ROTARY DEVICE Filed Feb. 21, 1949 2 SHEETSSHEET 2 y efifim Patented Mar. 25,1952

SELF-CONTAINED ROTARY DEVICE Frank Scognamillo, Bronx, N. Y., assignor:to: Scognamillo Engineering" Company,v Bronx,

Application'Februai-y 21, 1949, Serial No. 77,649

2. Claims. 1 This/invention relates'torotary devices particularly of theself-contained rotary pump, engine, or compressor type; and inparticular a rotary device having a dual blade such as a blade havingasmal'lerblade contained therein and resiliently urged outwardly forwiping contact with the inner peripheral surface of a cylindrical pumpchamber, and wherein arotor in which the blade is positioned isjournaled on a core eccentrically positionedin the pump chamber andextended from one end of the housing cover continuously through therotor.

The purpose of this invention is to provide an improved type ofconstruction for rotary devices wherein ablade driven by a drivingflange on a power actuated shaft drives a rotor in which the blade'ispositioned around a shaft or core whic is'stationary in the device.

This invention is an improvement over the blade driven rotarypump of aformer application ofmy father, Salvatore Scognamillo, deceased, whichapplication was filled December 18, 1948,

' with the Serial Number 66,693, and also on a copending applicationfiled June 16, 1948, with the Serial Number 33,407, and furthermore of apump of theprior Patent Number 2,443,994; the above copendingapplications and patent having been assigned to the ScognamilloEngineering Company, to which the application isalso assigned by anassignment filed herewith. The improvements of this invention being inthat the shaft'extends continuously through the device and rotor, andthe rotor is journaled on a shaft formed by a core extended inward froman'end of. the housing, and the blade provides a cradle foran auxiliaryinner blade providing a blade within; a blade and with the blade formingthe cradle held'by a floating and traveling ring and flange throughextending pins having cylindrical heads;-

A further improvement contemplated in this invention is in the'novel'construction and adaptationof a dual blade in that the auxiliary bladeisself-contained therein and in continuous contact against the surfaceof the surrounding housingnfree from the reciprocal action of the outerblade? positioned in the rotor slot.

In'the usual type of rotary device such as a pump, engine, compressor,or the like the blade or blades slide inv and out of a rotor fixed on orintegral with a shaft, and in the improved device of theabove-notedapplication where the rotor is freeor floating the'rotor is carried by acomparatively small pin which provides a limited bearing'surface; Withthis thought in mind; this improved device provides a relatively largesta- 2 tionary core which extends throughthe rotorand on which the rotoris freely slidable and'wlththe parts arranged in thismanner'it'ishpossible to extend the drivingshaft'straight through thedevice with bearings at both ends.

The object of this inventionis, therefore, to provide an improved typeof construction for rotary devices wherein a floating rotor is journaledon a large core or shaft and wherein the shaft extends through therotor;

Another objectvof the invention is to provide a rotary device having adual self-contained blade wherein an inner blade is carried by a largerblade which provides a cradle or carrier for the small inner blade.

Another object of the invention is tov provide arotary devicewherein afloating rotor! is 1'0- tated by a blade or a plurality of blades inwhich the blades are actuated by a 'driving. flange throughlongitudinally slidable pins with cylindrical heads, andwhereinthe'heads of the pins in the opposite ends of the bladesare positionedin sockets in a floating ring. 7

A further object of the invention is to provide an improved rotarydevice having dual blades with pins having cylindrical heads and a rotoriournaled on a stationary core which is of a comparatively simple andeconomical construction.

With these endsv in view the invention embodies a rotary device having ahousing with inlet and discharge connections in which a dual blade ispositioned in a slot in a rotor journaled'onan eccentrically positionedstationary core through which a driving shaft extends and the rotor isactuated by the blade which is driven by a driving flange keyed to thedriving shaft.

Other features and advantages of the inve tion will appear fromthe'following description taken in connection with the drawings,wherein:

Figure 1 is a view showing an end elevation. of the housing of thedevice with-the cover plate and core removed and with parts shown insection.

Figure 2 is a longitudinal section through the device with the bladeshown in elevation.

Figure 3 isa longitudinal section through the dual blade. 1

Figure 4 shows an end elevation of the blade.

Figure 5 is a cross sectional view of a modified form of blade whereinan inner blade is replaced by a wearing or wiping strip.

Figure 6 is an end view of the cylindrical headand pin of one end of theblade.

Figure 7 is a view showing a side elevationof the pin. and head.

Figure 8 is a longitudinal section similar to that shown in Figure 2showing the housing and core with the moving parts removed.

Figure 9 is an elevational view of the cover plate and core with partbroken away.

Figure 10 is a cross section through the driving flange.

Figure 11 is an end elevation of the driving flange.

, Figure 12 is floating ring.

Figure 13 is a cross section through the floating ring.

Figure 14 is a longitudinal section through the rotor on a slightlyreduced-scale.

Figure 15 is a similar view showing a modification wherein theintermediate part of the rotor is cored away.

Referring now to the drawings wherein like reference characters denotecorresponding parts the self-contained rotary device of this inventionan end elevational view of the includes a housing In made up of opposedend walls, one of these the cover plate H, connected by a .cylindricalperipheral wall forming with the end walls a substantially cylindricalchamber,

with a driving shaft I2, a rotor l3, a driving flange M, a blade I5,providing a cradle, and a floating ring [6, and wherein the floatingring is journaled on a hub IT on the inner surface 01' the cover plateand the rotor is journaled on a core l8 extended from the hub of thecover plate.

The housing is provided with a hub 19 and a similar hub 20 is providedin the cover plate which is bolted to the housing by bolts 2| and theshaft 12 is journaled in these hubs which are aligned as shown in Figure2. The shaft also extends through and is journaled inthe core l8.

and'the driving flange i4 is mounted on the shaft and secured inposition thereon by a key 22 that extends into a keyway 23 in theflange. The hub I9 is provided with an annular recess 24 in which thehub 25 of the driving flange is positioned.

The dual blade [5 is formed with a longitudinal slot 26 and a bore 21',as shown in Figures 3 and 4, and a Wiper or inner blade 28 is positionedin the slot and resiliently held outwardly by springs 2% and 30, whichare held against ledges 3| and 32, respectively. It will be understoodthat springs of any other type or design may be used and also that theblade may be urged outwardly by any other suitable resilient means. Theblades are provided with pins 33 having cylindrical heads 34. the pinsbeing free to turn and slide lengthwise in the bore 21, and the head atone end of the blade being positioned in an opening 35 in the drivingflange I4 with the head at the opposite end positioned in an opening 36of the v floating ring l6.

The rotor I3 is provided with a bore 31 to receive the core l8, and aslot 38 in which the cradle or dual blade I5 is positioned, and in thedesign shown in Figure 15, the intermediate part lindrical heads 46 atthe ends that fit into the openings 35 and 36 of the driving flange andfloating ring respectively, and this blade is provided with a wipingstrip 41 that contacts the inner peripheral surface 48 of the rotorchamber 49 in which an open crescent-shaped area 50 is provided, asshown in Figure 1.

With this improved type of construction the rotor, which is in the formof a sleeve travels freely around a fixed or stationary core which ispart of the housing and this provides a continuous crescent area throughwhich the blade or blades ar driven, and with the cylindrical heads atthe ends of the blade free to slide longitudinally of the blade anyunevenness of the parts is compensated for and smooth and balthe partswithout departing from the spirit of the invention.-

What'is claimed is:

1. A rotary machine of the character disclosed comprising a housinghaving opposed end walls connected by a cylindrical peripheral wall andforming therewith a substantially cylindrical chamber, said peripheralwall having spaced inlet and outlet ports open to said chamber, a shaftjournaled in said end walls concentric with said cylindrical chamber, acylindrical flange fixed on said shaft at the inner face of one of saidend walls and having a cylindrical socket in the peripheral portion ofthe same open to said chamber, a cylindrical ring journaled on saidopposite end wall concentric to said chamber and havinga cylindricalsocket in the peripheral portion of the same opposed to said socket inthe flange, a stationary cylindrical core projecting from said oppositeend wall to the inner face of said flange, a cylindrical rotor journaledon said core eccentric to said chamber and in running engagement withthe peripheral wall between said ports. said rotor extending full lengthbetween said flange and ring and having a substantially radial slot inthe periphery of the same and a blade slidably engaged in said slot andhaving running clearance with said peripheral wall, said blade havingcylindrical heads at the opposite ends of the same rotatably engaged insaid sockets in the flange and ring, respectively.

2. A rotary machine of the character disclosed comprising a housinghaving opposed end walls connected by a cylindrical peripheral wall andforming therewith a substantially cylindrical chamber, said peripheralwall having spaced inlet and outlet ports open to said chamber, a shaftjournaled in said end walls concentric with said cylindrical chamber, acylindrical flange fixed on said shaft at the inner face of one of saidend walls and having a cylindrical socket in the peripheral portion ofthe same open to said chamber, a cylindrical ring journaled on saidopposite end wall concentric to said chamber and having a cylindricalsocket in the peripheral portion of the same opposed to said socket inthe flange, a stationary cylindrical core projecting from said oppositeend wall to the inner face of said flange, a cylindrical rotor journaledon said core eccentric to said chamber and in running engagement withthe peripheral wall between said ports, said rotor extending full lengthbetween said flange and ring and having a substantially radial slot inthe periphery of the same and a blade slidably engaged in said slot andhaving running clearance with said peripheral wall, said blade havingcylindrical heads at the opposite ends of the same rotatably engaged insaid sockets in the flange and ring, respe'etii ely, said heads at theends of I the blade comprising pins rotatably and slidably engaged inthe" ends of the blade and having enlarged cylindrical end portionsengaged over the ends of the blade.

FRANK SCOGNAMILLO.

RitFERENcEs CITED The following references are of record in the file ofthis patent:

- Number 10 Number UNITED STATES PATENTS Great; Britain Jan. 15, 1937

